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Polyvinyl chloride composite foaming material and production method thereof

A polyvinyl chloride and composite foaming technology, which is applied in the field of foam material production, can solve the problems of reducing the heat resistance of materials, cell collapse and deformation, and deformation of foam materials, and achieves improved heat resistance and uniform and dense cells. , the effect of cell reduction

Inactive Publication Date: 2019-02-01
黄杏兰
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] In the present invention, dibutyltin maleate is added in the process of preparing the foaming material, so that the organotin is grafted on the polyvinyl chloride branch chain, and the presence of the organotin can improve the heat resistance of the polyvinyl chloride, thereby preventing the prepared The voids of the foamed material collapse at high temperature, and the shape changes, which leads to the foaming effect at high temperature, which solves the problem that the existing polyvinyl chloride foamed material reduces the density of the material due to the existence of cells, thereby reducing the heat resistance of the material , it is easy to cause cell collapse and deformation at higher temperatures, resulting in deformation of the foamed material, which in turn affects the use of the problem

Method used

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  • Polyvinyl chloride composite foaming material and production method thereof
  • Polyvinyl chloride composite foaming material and production method thereof
  • Polyvinyl chloride composite foaming material and production method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0035] The specific preparation process of composite carbon nanotube monomer is as follows:

[0036] Step 1: Weigh 1kg of carbon nanotubes and add them to 4L of aqua regia, ultrasonically disperse for 30 minutes, pour the solution into a reaction flask, heat to 90°C for 1 hour of constant temperature reaction, then filter, wash, and dry to obtain carboxylated carbon nanotubes;

[0037]Step 2: Add 1 kg of carboxylated carbon nanotubes prepared in Step 1 into water, mix well, add 1.2 L of thionyl chloride to it, raise the temperature to 60 ° C for 3 hours, add 1.23 kg of acrylamide to the reaction vessel, and raise the temperature Continue to react at 70°C for 4h, then filter, wash and dry to obtain composite carbon nanotube monomer;

[0038] The specific preparation process of the anti-aging filler is as follows:

[0039] ①Add 1kg of nano-calcium carbonate to water, mix evenly, add 2.1kg of trifluoromethanesulfonic anhydride to it, and stir evenly at room temperature;

[0040...

Embodiment 2

[0042] Wherein the specific preparation process of composite carbon nanotube monomer is as follows:

[0043] Step 1: Weigh 1kg of carbon nanotubes and add them to 4L of aqua regia, ultrasonically disperse for 30 minutes, pour the solution into a reaction flask, heat to 90°C for 1 hour of constant temperature reaction, then filter, wash, and dry to obtain carboxylated carbon nanotubes;

[0044] Step 2: Add 1kg of the carboxylated carbon nanotubes prepared in Step 1 into water, mix well, add 1.2L of thionyl chloride to it, raise the temperature to 60°C and react for 3 hours, add 1.26kg of acrylamide to the reaction vessel, and raise the temperature Continue to react at 70°C for 4h, then filter, wash and dry to obtain composite carbon nanotube monomer;

[0045] Wherein the specific preparation process of the anti-aging filler is as follows:

[0046] ①Add 1kg of nano-calcium carbonate to water, mix evenly, add 2.2kg of trifluoromethanesulfonic anhydride to it, and stir evenly at ...

Embodiment 3

[0049] The specific reaction process of polyvinyl chloride composite foam material is as follows:

[0050] In the first step, 6.8 kg of polyvinyl chloride resin powder and 17 kg of tetrahydrofuran solution were added into a three-necked flask, and the temperature was raised to 70° C. and quickly stirred and dissolved to obtain a polyvinyl chloride solution;

[0051] In the second step, the temperature of the polyvinyl chloride solution prepared in the first step was raised to 140°C for reflux, and at the same time, 6.8 kg of initiator, 1.2 kg of dibutyltin maleate and 1.5 kg of the composite carbon nanometer prepared in Example 1 were added to the flask. Tube monomer, stirred and reacted at constant temperature for 8 hours to obtain a polymer solution;

[0052] In the third step, add 0.5 kg of the anti-aging filler prepared in Example 1 to the polymer solution prepared in the second step, stir evenly, heat up to 80°C, and add 0.6 kg of formaldehyde dropwise to the flask using ...

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Abstract

The invention discloses a polyvinyl chloride composite foaming material comprising the following raw materials in parts by weight: 68-72 parts of polyvinyl chloride resin, 12-14 parts of dibutyltin maleate, 15-17 parts of a composite carbon nanotube monomer, 68-73 parts of an initiator, 1-2 parts of a plasticizer, 2-3 parts of an antioxidant, 5-7 parts of an anti-aging filler, 6-9 parts of formaldehyde, 3-5 parts of a polyurethane foaming agent, and 170-180 parts of tetrahydrofuran. By addition of the composite carbon nanotube monomer in the material, carbon nanotubes can be grafted onto a polyvinyl chloride branch chain through free radical polymerization, the tensile strength and the impact resistance ability of a foaming material can be greatly improved, particularly, the foaming material is not easy to break and deform when bearing large pressure or impact force, the problem that a conventional polyvinyl chloride foaming material has many bubble holes in the material so as to leadto reduction of the impact resistance of the foaming material is solved, and then the material can keep a shape unchanged under the relatively strong action.

Description

technical field [0001] The invention belongs to the field of foam material production, and relates to a polyvinyl chloride composite foam material and a production method thereof. Background technique [0002] Polyvinyl chloride has high mechanical strength, good alkali resistance, dielectric properties and insulation properties. Compared with ordinary rubber, it also has certain wear resistance and flame retardancy, but its impact resistance and heat and light resistance Poor performance, especially for the foamed polyvinyl chloride material, because the material contains more cells inside, the impact resistance of the foamed material is reduced, and the density of the material is reduced due to the existence of cells, which in turn reduces the The heat resistance of the material is prone to cell collapse and deformation at higher temperatures, resulting in deformation of the foamed material, which in turn affects the use. At the same time, due to the unstable fluidity of t...

Claims

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Application Information

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IPC IPC(8): C08F259/04C08F2/44C08K3/04C08K9/02C08K9/04C08K3/26C08J9/00
CPCC08F2/44C08F259/04C08J9/00C08J9/009C08J2351/00C08K3/041C08K3/26C08K9/02C08K9/04C08K2003/265
Inventor 黄杏兰
Owner 黄杏兰
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